patch 8.2.1536: cannot get the class of a character; emoji widths are wrong Commit: https://github.com/vim/vim/commit/4e4473c927167fd24e5c8df90e0e8035080cf2da Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 28 22:24:57 2020 +0200 patch 8.2.1536: cannot get the class of a character; emoji widths are wrong Problem: Cannot get the class of a character; emoji widths are wrong in some environments. Solution: Add charclass(). Update some emoji widths. Add script to check emoji widths.

" Script to fill the window with emoji characters, one per line.

if &modified
  new
else
  enew
endif

" Use a compiled Vim9 function for speed
def DoIt()
  let lnum = 1
  for c in range(0x100, 0x1ffff)
    let cs = nr2char(c)
    if charclass(cs) == 3
      setline(lnum, '|' .. cs .. '| ' .. strwidth(cs))
      lnum += 1
    endif
  endfor
enddef

call DoIt()
set nomodified